EFDA Sealant Application and Polishing 5

Question 1

Which factor most significantly affects the long-term retention rate of pit and fissure sealants?

Accepted Answer

Moisture control during placement

Answer

Adequate moisture control is the single most critical factor in sealant retention because contamination prevents proper bonding to etched enamel.

Question 2

Coronal polishing before sealant placement is intended to remove:

Accepted Answer

Plaque and light stain from tooth surfaces

Answer

Coronal polishing removes soft deposits and light stain so the enamel surface is clean for effective etching and bonding.

Question 3

Which prophy angle motion is recommended during coronal polishing to prevent heat buildup?

Accepted Answer

Intermittent light pressure with a slow-speed, low-rpm technique

Answer

Intermittent, light-pressure strokes at low speed minimize frictional heat that could damage the enamel or pulp.

Question 4

A filled resin sealant differs from an unfilled resin sealant primarily in that it:

Accepted Answer

Has greater wear resistance due to filler particles

Answer

Filled sealants contain inorganic filler particles that increase wear resistance, making them better able to withstand occlusal forces.

Question 5

When would it be CONTRAINDICATED to place a pit and fissure sealant?

Accepted Answer

A tooth with an open, shallow fissure that self-cleanses easily

Answer

Teeth with open, shallow fissures that can be cleaned by a toothbrush are self-cleansing and do not benefit from sealant placement.

(EFDA) Expanded Function Dental Auxiliary Practice Test